SplitAtlas

GREE / Sapphire R32

GREE Sapphire 20k One-Way Cassette R-32 208/230V Mini-Split

Certified capacity
19,000 BTU/h[2]
SEER2
23.5 SEER2[2]
Heating floor
-22 F[1]
Voltage
230 V[1]
Install path
Professional install

As with the Vireo version, read this one carefully: it is badged 20k, certifies at 19,000 BTU, and runs the larger OWC20 head on the SAP18 outdoor unit - the same condenser as the 18k model. It is a bigger head on an 18k system, not a bigger system.

Efficiency is identical to the 18k Sapphire one-way: 23.5 SEER2, 8.7 HSPF2, -22F. The genuine benefit is airflow - a larger head moving the same air works less hard and is quieter for it.

1 zoneProfessional installCurrent

Refrigerant generation

R-32 - current-generation refrigerant

This system's warranty depends on licensed installation — get quotes from installers in your area.

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Error Codes
GREE one-way ceiling cassette indoor unit for R32 mini-split systems.

Image: GREE Comfort official All-Match One-Way Cassette R32 product page

Data completeness: 100%
Last sourced
Aug 2, 2026

SplitAtlas score

8.0 / 10

Methodology
Cooling efficiencyAbove average

(23.5 SEER2) among 18k systems

Heating efficiencyBottom quartile

(8.7 HSPF2) among 18k systems

Cold-weather performanceAbove average

(76.3% heat retained at 5F; -22 F heating floor) among 18k systems

NoiseTop quartile

(-46 dBA indoor min / 59 dBA outdoor) among 18k systems

WarrantyBelow average

(5 yr parts / 7 yr compressor) across the catalogue

Feature setBelow average

(4 verified features) across the catalogue

Documentation & partsBelow average

(6 manuals; spec sheet) across the catalogue

Not evaluated

  • Installation accessibility — not applicable (professional install)N/A

    professional install - DIY-accessibility not applicable

  • Price-to-value — not evaluatedN/A

    This is a professionally installed, quote-only system, so we can't score its price. Get an installed quote to compare real cost.

    Get a quote

Key ratings

Rated cooling

19,000BTU/h[2]

Rated heating

19,000BTU/h[2]

Buyer review snapshot

Best for / skip if

Best for

  • High-efficiency shortlists; SEER2 is 23.5.

Install difficulty

Professional flared-line install
  • Electrical: 230V; MCA 23 A; breaker/fuse 25 A.
  • Line set: Flared line connections; precharged 25 ft; max 131 ft.

Alternatives

Availability and price context

We could not verify a current retail price for this model. This model is sold through dealers, so we link to contractor quotes rather than a retail price.

Purchase channel policy

GREE publishes an online/retail warranty-claim path for equipment purchased online, Home Depot, or Lowes rather than treating online purchase as a warranty voidance.

Warranty impact
Online purchase changes the claim path: routine parts use GREE's online claim form, while compressor failures and refrigerant leaks require tech-support confirmation before the online claim.
Installation condition
Warranty claims for online/retail purchases must be completed by a contractor after an on-site diagnosis, with required documentation such as purchase receipt or installation invoice and data-plate photos.
Authorized channel
GREE distributor path for distributor purchases; GREE online warranty claim form for equipment purchased online, Home Depot, or Lowes; GREE Select dealer installation and registration for the 10-year extended warranty.

GREE online purchases have a manufacturer-published warranty path, but buyers should keep purchase and installation documents and use a licensed HVAC contractor for diagnosis and claims.

Compare online-purchase warranty rules by brand

Source: GREE Comfort: How Does the GREE Warranty Work? Coverage, Claims, and 10-Year Extension Guide; retrieved Aug 15, 2026.

Source date

Model data sourced
Aug 2, 2026
Page reviewed
Aug 2, 2026
Source-backed records
4
Newest source retrieved
Aug 2, 2026

Warranty tiers

Warranty: 5 years parts and 7 years compressor as standard.

Review methodology

Strengths

  • 23.5 SEER2, the strongest cooling certificate in the one-way range.
  • Larger head on the same condenser generally means quieter operation.
  • 19,000 BTU with a -22F low-ambient rating.

Weaknesses

  • The 20k badge overstates it - certified capacity is 19,000 BTU.
  • Shares the SAP18 condenser with the 18k model, so it is not a capacity step up.
  • Identical efficiency to the 18k, so the premium rests entirely on quieter airflow.

Climate suitability

Minimum heating ambient
-22 F[1]
Rated heating at 5F
14,500 BTU/h[2]
Rated heating at 17F
15,500 BTU/h[2]
Rated heating at 47F
19,000 BTU/h[2]

Specifications

Show
Manufacturer
GREE
Brand
GREE
Product line
Sapphire R32
Model number
OWC20HP230V1R32AH indoor / SAP18HP230V1R32AO outdoor
Indoor unit model
OWC20HP230V1R32AH
Outdoor unit model
SAP18HP230V1R32AO
Number of zones
1
Max indoor units
not published
Rated cooling capacity
19,000 BTU/h[2]
Rated heating capacity
19,000 BTU/h[2]
Voltage
230 V[1]
MCA
23 A[1]
Maximum fuse or breaker size
25 A[1]
Breaker needed
not published
SEER2
23.5 SEER2[2]
EER2
10.75 EER2[2]
HSPF2 (Region 4)
8.7 HSPF2[2]
HSPF2 (Region 5)
not published
COP
not published
COP at 47F
not published
COP at 5F
not published
Minimum outdoor heating temperature
-22 F[1]
Minimum outdoor cooling temperature
-20 F[1]
Maximum outdoor temperature
122 F[1]
Indoor noise range
36-46 dB(A)[1]
Outdoor noise rating
59 dBA[1]
Indoor weight
44.1 lb[1]
Outdoor weight
94.8 lb[1]
Refrigerant
R-32[2]
Refrigerant charge
47.6 oz[1]
Manufacturer coverage
not published
Line-set size
1/4 in liquid / 1/2 in suction
Included line-set length
GREE professional single-zone cassette and ducted systems publish field-supplied flared line sizes and maximum/precharged piping data; no included consumer line set length is published.
Maximum line-set length
131 ft[1]
Max line set per indoor
not published
Maximum elevation difference
82 ft[1]
Max height between indoor units
not published
Wi-Fi support
not supported[1]
Energy Star status
Not ENERGY STAR certified[2]
AHRI certification number
215416023[2]
Warranty
Standard: 5 yr parts / 7 yr compressor (eligible residential system). Standard residential GREE mini-split coverage is 5 years parts and 7 years compressor for eligible post-2021 systems.
Install path
Professional install
Retail price
This model is sold through dealers, so we link to contractor quotes rather than a retail price.
Available retailers
not published
Manual links
AHRI Active row 215416023, All Match One-Way Cassette R32 service/installation manual, GREE All Match One-Way Cassette R32 official product page, All Match One-Way Cassette R32 owner manual, OWC20HP230V1R32AH / SAP18HP230V1R32AO All Match One-Way Cassette R32 submittal, GREE DFS warranty statement for units installed after 2021-12-31
Specification sheet
OWC20HP230V1R32AH / SAP18HP230V1R32AO All Match One-Way Cassette R32 submittal
Last sourced date
Aug 2, 2026

Electrical requirements

Show
Voltage
230 V[1]
Voltage range
208/230V[1]
Phase
1[1]
Frequency
60 Hz[1]
MCA
23 A[1]
Breaker needed
not published
Maximum breaker size
25 A[1]
Maximum fuse size
25 A[1]
Maximum cooling current
not published
Maximum heating current
not published
Manufacturer wire notes
Interconnecting wire size AWG 14 / 4; main power wire per local code.[1]

Installation considerations

Show
Liquid line
1/4 in[1]
Suction line
1/2 in[1]
Line connection type
Flared line connections[1]
Precharged length
25 ft[1]
Included line-set length
GREE professional single-zone cassette and ducted systems publish field-supplied flared line sizes and maximum/precharged piping data; no included consumer line set length is published.
Maximum line-set length
131 ft[1]
Max line set per indoor
not published
Max height between indoor units
not published
Indoor dimensions
38-55/64 x 15-5/32 x 7-1/64 in[1]
Outdoor dimensions
37-23/32 x 15-53/64 x 25-63/64 in[1]
Indoor weight
44.1 lb[1]
Outdoor weight
94.8 lb[1]
Drain size
not published

Related systems and guides

Frequently asked questions

Can I install the GREE Sapphire R32 20,000 BTU One-Way Ceiling Cassette R-32 208/230V (OWC20HP230V1R32AH / SAP18HP230V1R32AO) myself, or do I need a pro?
GREE Sapphire R32 20,000 BTU One-Way Ceiling Cassette R-32 208/230V (OWC20HP230V1R32AH / SAP18HP230V1R32AO) is built for professional installation: the line set must be flared, evacuated, and charged, which requires EPA-certified refrigerant handling. Installing it outside the manufacturer's requirements can void the warranty, so budget for a qualified HVAC installer.
Will the GREE Sapphire R32 20,000 BTU One-Way Ceiling Cassette R-32 208/230V (OWC20HP230V1R32AH / SAP18HP230V1R32AO) keep heating in a cold winter?
The manufacturer publishes 14,500 BTU/h of heating output at 5F. Rated heating operation extends down to -22 F. Certified heating efficiency is 8.7 HSPF2. Match those numbers against your climate's design temperature - in cold regions, output at 5F matters far more than the nameplate capacity measured at 47F.
What electrical circuit does the GREE Sapphire R32 20,000 BTU One-Way Ceiling Cassette R-32 208/230V (OWC20HP230V1R32AH / SAP18HP230V1R32AO) need?
Published electrical requirements: 230 V voltage, 23 A minimum circuit ampacity, and 25 A maximum breaker or fuse sizing. Confirm the final circuit against the unit nameplate and local code with a licensed electrician.
How far can the outdoor unit be from the indoor head?
The published maximum line-set length is 131 ft, and the included line set comes pre-charged for 25 ft. Longer runs than the included set allows typically mean added refrigerant and a pro visit, so measure the planned routing before ordering.
What warranty does the GREE Sapphire R32 20,000 BTU One-Way Ceiling Cassette R-32 208/230V (OWC20HP230V1R32AH / SAP18HP230V1R32AO) carry?
The manufacturer publishes these warranty tiers: Standard: 5 yr parts / 7 yr compressor (eligible residential system). Registration requirements and proof of qualified installation commonly affect coverage, so read the warranty terms before install day.

Data sources

Show
  1. GREE Comfort: OWC20HP230V1R32AH and SAP18HP230V1R32AO GREE All Match One-Way Cassette R32 submittalSourced - manufacturer technical document

    Covers Frequency, Maximum breaker size, Maximum fuse size, Minimum circuit ampacity, Phase, Manufacturer wire notes and more

  2. Air-Conditioning, Heating, and Refrigeration Institute: AHRI Active form-factor row 215415559Sourced - AHRI directory

    Covers AHRI certification number, Rated cooling capacity, EER2, Energy Star status, Rated heating capacity, HSPF2 (Region 4) and more

  3. GREE Comfort: GREE All Match One-Way Cassette R32 official product pageSourced - manufacturer technical document

    Covers Form factor

  4. GREE Comfort: GREE DFS warranty statement for units installed after 2021-12-31Sourced - manufacturer technical document

    Covers Legacy compressor warranty value, Legacy warranty value, Standard compressor warranty, Standard warranty conditions, Standard parts warranty, Warranty notes

Last updated

Aug 2, 2026